MyBB

When trying to install a fresh copy of the trunk (1.6) with the PostgreSQL engine, it fails at the Table Creation stage with a SQL error:

Creating table mybb_datacache...done
Creating table mybb_delayedmoderation...
MyBB SQL Error
MyBB has experienced an internal SQL error and cannot continue.

SQL Error:
42601 - ERROR: syntax error at or near "auto_increment" LINE 2: did int NOT NULL auto_increment, ^
Query:
CREATE TABLE mybb_delayedmoderation ( did int NOT NULL auto_increment, type varchar(30) NOT NULL default '', delay int NOT NULL default '0', uid int NOT NULL default '0', fid smallint NOT NULL default '0', tids text NOT NULL, dateline bigint NOT NULL default '0', inputs text NOT NULL default '', PRIMARY KEY (did) );